Add CoinGeckoApi Wrapper

freqtrade/util/CoinGecko.py

@@ -0,0 +1,24 @@
+from pycoingecko import CoinGeckoAPI
+
+
+class FtCoinGeckoApi(CoinGeckoAPI):
+    """
+    Simple wrapper around pycoingecko's api to support Demo API keys.
+
+    """
+
+    __API_URL_BASE = "https://api.coingecko.com/api/v3/"
+    __PRO_API_URL_BASE = "https://pro-api.coingecko.com/api/v3/"
+    _api_key: str = ""
+
+    def __init__(self, api_key: str = "", *, is_demo=True, retries=5):
+        super().__init__(retries=retries)
+        # Doint' pass api_key to parent, instead set the header on the session directly
+        self._api_key = api_key
+
+        if api_key and not is_demo:
+            self.api_base_url = self.__PRO_API_URL_BASE
+            self.session.headers.update({"x-cg-pro-api-key": api_key})
+        else:
+            self.api_base_url = self.__API_URL_BASE
+            self.session.headers.update({"x-cg-demo-api-key": api_key})